com.formkiq.vision.util.JSONBuilder Maven / Gradle / Ivy

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/*
 * Copyright (C) 2018 FormKiQ Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.formkiq.vision.util;

import java.io.IOException;
import java.text.SimpleDateFormat;

import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.PropertyNamingStrategy;
import com.fasterxml.jackson.databind.SerializationFeature;

/**
 * 
 * JSON Builder Helper Methods.
 *
 */
public class JSONBuilder {

	/**
	 * {@link Object} to JSON.
	 * @param obj {@link Object}
	 * @return {@link String}
	 * @throws IOException IOException
	 */
	public String toJSON(final Object obj) throws IOException {
		return build().writeValueAsString(obj);
	}
	
	/**
	 * {@link Object} to JSON.
	 * @param obj {@link Object}
	 * @return {@link String}
	 * @throws IOException IOException
	 */
	public String toJSONPretty(final Object obj) throws IOException {
		return build().writerWithDefaultPrettyPrinter().writeValueAsString(obj);
	}

    /**
     * @return {@link ObjectMapper}
     */
    private ObjectMapper build() {
    	ObjectMapper om = new ObjectMapper();
    	om.configure(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY, true);
    	om.setDateFormat(new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ"));
    	om.setPropertyNamingStrategy(PropertyNamingStrategy.LOWER_CASE);
    	om.setSerializationInclusion(Include.NON_NULL);
    	om.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    	om.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true);
    	return om;
    }
}